refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -8,16 +8,16 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageVersion Include="NUnit" Version="4.5.1" />
     <PackageVersion Include="NUnit3TestAdapter" Version="6.1.0" />
-    <PackageVersion Include="Polyfill" Version="9.18.0" />
+    <PackageVersion Include="Polyfill" Version="9.22.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.172" />
     <PackageVersion Include="Shipwreck.Phash.Bitmaps" Version="0.5.0" />
     <PackageVersion Include="System.Drawing.Common" Version="10.0.5" />
-    <PackageVersion Include="Verify" Version="31.13.2" />
+    <PackageVersion Include="Verify" Version="31.13.5" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.Nunit" Version="31.13.2" />
+    <PackageVersion Include="Verify.Nunit" Version="31.13.5" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Argon" Version="0.33.5" />
-    <PackageVersion Include="DiffEngine" Version="19.0.0" />
+    <PackageVersion Include="DiffEngine" Version="19.1.2" />
     <PackageVersion Include="EmptyFiles" Version="8.17.2" />
     <PackageVersion Include="SimpleInfoName" Version="3.2.0" />
   </ItemGroup>

src/Verify.Phash.slnx

@@ -2,7 +2,6 @@
   <Folder Name="/Solution Items/">
     <File Path="../.gitignore" />
     <File Path="../docs/intro.include.md" />
-    <File Path="../docs/zzz.include.md" />
     <File Path="../readme.md" />
     <File Path="../.editorconfig" />
     <File Path="../.gitattributes" />